How long? I had surgery and was out the same day (which is how it is done in the US for the most part). I think without complications a day or two is typical in Europe, Australia. In same day surgery centers I think you are pretty much there for half a day or maybe a bit more.
Regular activities, lifting? I was not allowed to pick up anything over 5 pounds (I *could* but not should) for a few weeks. Dr G doesn't seem real specific after a few weeks. I think you do things gradually. I can do everything in my house except garbage and the litter box. (I am at 4 weeks). I have a friend who comes in a couple times a week. I was not allowed to drive for two weeks. I drive now, but have to drive lower hand. I have heard some doctors are VERy conservative and heard of one doctor who doesn't allow lifting over 5 lbs for 3 months. I think this VERY cautious! A 3 year old is kind of heavy but since you aren't doing this 10-15 times a day...It's not goign to kill you or completely strip your scars. Lifting with elbows locked and so on, you'll learn tricks.
I put about two weeks of meals in the freezer and got plastic utensils and paper plates, kind of at the end of those but it was a really good idea.
Exercise? Work out? It's good to walk around right after. I mean RIGHT after (maybe next day). You are not supposed to get your heart rate up while you are wrapped and maybe a couple weeks after that. I walked about a mile about 4-5 days after surgery. You can do walking and so on, but no weights and stuff like push ups for awhile (Dr G says 6 weeks which sounds way too early to me!) I think that this is going to be an individual thing of between 6 weeks to several months.
I think of hiking as more vigorous than walking esp for me it means elevation (hiking in the mountains).
Stairs? I could climb stairs the same day, they wouldn't let me because I was very wobbly. But the next day the wobbliness was completely gone. My room was upstairs and would go up and down stairs many times a day with drains and all.
Job and School? IF I had a sedentary job, I could have gone back to work in a couple weeks. I think the big problem for school is carrying books and so on. Maybe a little wheely backpack? You really shouldn't pull too much weight either. Carrying just a notebook and some pens wouldn't be an issue. You MAY not have completely normal energy right after, I did but that varies.
Hard to hide? well RIGHT after, it would be hard to hide drains and so on (if you have drains), but now, heck no. You might have bandages but they are going to be hidden by clothes. The nipple dressings and so on, I had for 3 weeks. You couldn't see them.
Thinking I'm doing a logistics video. Might put it up here. Not too many people talk about it beyond supplies.
--Jay